The mean free path of conduction electrons in copper is about 4 × 10 –8 m. The electric…
Physics · Class 12 · CBSE — Current Electricity
The mean free path of conduction electrons in copper is about 4 × 10–8 m. The electric field which can give on an average 2 eV energy to a conduction electron in a block of copper is
- 4 × 106 V m–1
- 5 × 107 V m–1
- 10 × 107 V m–1
- 2.5 × 107 V m–1
Answer
(B) 5 × 10 7 V m –1
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